Cast-steel spring-plank.



11".. .0; DAVIS. CAST STEEL SPRING PLANK.

' APPLICATION BIL-E1) DEC. 18, L911.

Pat nted Mar. 18, 1913.

not wish to be limited to the exact forms herein shown and described.

I claim: X

l. in a car truck the combination of a sid frame having a spring seat, pins projected vertically from said seat and a spring plank having perforations registering with the said pins, said plank being reinforced around the perforations therein, said reinforcements serving as a means for retaining a nest of springs against horizontal movement, substantially as described.

2. In a car truck, the combination of a side frame having a spring seat, dowels projected from said spring seat and a,cast

metal springplank having openings registering with said dowels and provided with reinforcements around said openings, said reinforcements serving as a means for re taining a nest of springs against horizontal movement, substantially as described.

In a car truck, the combination .of a one-piece side frame having a transverse opening and a spring seat, pins projected from said spring seat and a cast metal spring plank having openings registering with said pins and provided with reinforcements around said openings, said reinforcements serving as a means for retaining a nest of springs against horizontal movement, substantlall'y as described. I

4. In a car truck, the combination of a one-piece side. frame having a transverse opening and a spring seat, said spring seat being provided with perforations, pins riveted in said perforations and pro ected into the transverse opening of said side frame to form dowels, a cast steel spring plank having perforations registering with said dowels and provided with reinforcements around said perforations, said reinforcements serving as a means for retaining a nest of springs against horizontal movement, substantially as described.

5. In a car truck, the combination of a side frame having a spring seat provided with perforations, dowels secured in said perforations, said dowels having endwisemovement-limiting abutments above and below said spring seat, and a spring plank having perforations registering with said dowels and adapted to be fitted on said spring seat, substantially as described.

JAMES C. DAVIS.

Witnesses:

A. TREVOR JoNEs, S. M. DARLING. 

